Mixed substance containing HCFC-142b(chloro-1,1-difluoroethane) for moderate and high temperature heat pump

A technology of HCFC-124 and difluoroethane, which is applied in the field of refrigeration refrigerants, can solve the problems of deterioration of cycle performance and inability to provide heat energy, and achieve the effects of reducing the greenhouse effect, excellent environmental characteristics, and excellent cycle performance

Inactive Publication Date: 2005-08-17
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the air conditioner-heat pump system that is widely used mainly uses HCFC22 or its substitutes R407C, R410A, etc., and the maximum temperature of hot water that the system can provide is 50-55°C (no matter how high it is,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: get 15.8 mass %HCFC-142b, 75.0 mass %HCFC-124 and 9.2 mass %HFE-134, used as a refrigerant after physical mixing at room temperature.

Embodiment 2

[0025] Embodiment 2: get 16.2 mass %HCFC-142b, 77.0 mass %HCFC-124 and 6.8 mass %HCFC-143, used as a refrigerant after physical mixing at room temperature.

Embodiment 3

[0026] Embodiment 3: take 25.0 mass %HCFC-142b, 60.0 mass %HCFC-124 and 15.0 mass %HFC-236ea, used as a refrigerant after physical mixing at room temperature.

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PUM

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Abstract

The mixed work medium containing HCFC-142b(-chloro-1, 1-difluroethane) for high and medium temperature heat pump is suitable for use as the refrigerant of high and medium temperature heat pump system of condensation temperature of 60-120 deg.c. The mixed work medium is ternary or quarternary mixture of 10 kinds of components, including HCFC-124, HCFC-142b, HFE-134, HFC-143, HFC-236ca, HFC-245fa, HFC-236fa, HC-600a, HFC-134a and HCFC-123, in certain mass proportion; and various components are mixed physically at normal temperature. The present invention has no damage on ozone layer, low greenhouse effect potential, proper thermal parameters and excellent circulation performance, and may be used in both optimally designed HCFC22 air conditioner compressor and available HCFC22 air conditioner compressor to convert the air conditioner compressor into high and medium temperature heat pump set with the new work medium.

Description

technical field [0001] The invention belongs to the refrigerant in heat pump or refrigeration and air-conditioning systems, and is especially suitable as a refrigerant in medium-high temperature heat pump systems with a condensation temperature of 60-120°C. Background technique [0002] At the expense of consuming a part of high-grade energy (such as electric energy), heat pump technology converts low-grade heat energy that cannot be directly used (heat energy contained in air, soil, surface water or shallow groundwater, as well as geothermal energy, solar energy, and industrial energy) through a thermal cycle. The grade of waste heat, etc.) is raised to the level that can be used; the energy efficiency ratio (or performance coefficient--COP) of the system is generally higher than 3. In order to meet the requirements of the industrial sector for higher heating temperatures, heat pump technology is developing towards medium-high temperature (cond...

Claims

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Application Information

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IPC IPC(8): C09K5/04
Inventor 王怀信马利敏
Owner TIANJIN UNIV
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